Origin of backward to forward wave dominance in broadband Raman scattering in hydrogen
Authors: Marchetti S., Simili R., Gabbanini C.
Autors Affiliation: Istituto Nazionale di Ottica, INO-CNR, U.O.S. Pisa Adriano Gozzini, Via G.Moruzzi 1, 56124 Pisa, Italy
Abstract: We have observed that in a multilens H(2) cell it is possible to obtain a total dominance of the first Stokes backscattered wave with respect to the forward wave . This dominance of the backward wave is produced by a combination of a strong focusing and a matched backward mode stimulated by the forward generation. A quantitative analysis of the backward gain and of the forward gain suppression due to the interference with a matched antiStokes generation is performed. Both the gain and bandwidth analysis are in agreement with a theory of multimode broadband scattering in quasi-stationary regime. A matched backward mode is observed for the pump and its mixing with the first Stokes backward emission induces weak high order backward Raman generations that should be in principle not observable. (C) 2010 Elsevier B.V. All rights reserved.
Journal/Review: OPTICS COMMUNICATIONS (PRINT)
Volume: 284 (1) Pages from: 441 to: 445
KeyWords: Raman scatteringDOI: 10.1016/j.optcom.2010.08.032Citations: 3data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-01-12References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here